CVE-2026-51994CWE-918ssrf

CVE-2026-51994

Critical · published September 24, 2026

CVSS v3.1
9.1
EPSS
0%
Percentile
27.8
In the wild
Unconfirmed
What it is

mcp-remote versions 0.1.32 through 0.1.38 are vulnerable to Server-Side Request Forgery (SSRF) via the resource_metadata URL extracted from a remote MCP server's WWW-Authenticate header

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00353 · 27.8th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-09-24T19:17Z
References (4)
https://github.com/geelen/mcp-remote · [email protected]https://github.com/geelen/mcp-remote/security/advisories · [email protected]https://github.com/playb0t/mcp-remote-oauth-security#readme · [email protected]https://github.com/playb0t/mcp-remote-oauth-security/blob/v1.0.1/advisories/F-01-resource-metadata-ssrf.md · [email protected]
EPSS history
Timeline
  • 26 SEP 03:25Z
    EPSS moved — → 0%
    epss
  • 24 SEP 00:00Z
    mcp-remote versions 0.1.32 through 0.1.38 are vulnerable to Server-Side Request Forgery (SSRF) via the resource_metadata URL extracted from a remote MCP…
    cvelistv5